[jboss-user] [EJB 3.0] - Re: EJB3 - tutorial

[TerminalXception]

I have been trying this calculator example given in trail blazer its not working .Am getting the following error

Im new to EJB ...and JMX am using Netbeans and inbuilt jboss-4.0.4.GA


00:25:52,250 INFO  [Server] JBoss (MX MicroKernel) [4.0.4.GA (build: CVSTag=JBoss_4_0_4_GA date=200605151000)] Started in 9s:719ms
00:32:42,203 ERROR [STDERR] java.lang.RuntimeException: Error creating MBeanProxy: trail:service=calculator
00:32:42,203 ERROR [STDERR] 	at org.jboss.mx.util.MBeanProxyExt.init(MBeanProxyExt.java:415)
00:32:42,203 ERROR [STDERR] 	at org.jboss.mx.util.MBeanProxyExt.(MBeanProxyExt.java:99)
00:32:42,203 ERROR [STDERR] 	at org.jboss.mx.util.MBeanProxyExt.create(MBeanProxyExt.java:394)
00:32:42,203 ERROR [STDERR] 	at org.jboss.mx.util.MBeanProxyExt.create(MBeanProxyExt.java:349)
00:32:42,203 ERROR [STDERR] 	at org.jboss.mx.util.MBeanProxyExt.create(MBeanProxyExt.java:324)
00:32:42,390 ERROR [STDERR] 	at org.apache.jsp.calculator_jsp.jspInit(calculator_jsp.java:23)
00:32:42,390 ERROR [STDERR] 	at org.apache.jasper.runtime.HttpJspBase.init(HttpJspBase.java:78)
00:32:42,390 ERROR [STDERR] 	at org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:155)
00:32:42,390 ERROR [STDERR] 	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:315)
00:32:42,390 ERROR [STDERR] 	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
00:32:42,390 ERROR [STDERR] 	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
00:32:42,390 ERROR [STDERR] 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
00:32:42,390 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
00:32:42,890 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
00:32:42,890 ERROR [STDERR] 	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
00:32:42,890 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
00:32:42,890 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
00:32:42,890 ERROR [STDERR] 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)

00:32:42,890 ERROR [STDERR] 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
00:32:42,890 ERROR [STDERR] 	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
00:32:42,890 ERROR [STDERR] 	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
00:32:42,890 ERROR [STDERR] 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
00:32:42,890 ERROR [STDERR] 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
00:32:42,890 ERROR [STDERR] 	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
00:32:42,890 ERROR [STDERR] 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
00:32:42,890 ERROR [STDERR] 	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
00:32:42,890 ERROR [STDERR] 	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
00:32:42,890 ERROR [STDERR] 	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
00:32:42,890 ERROR [STDERR] 	at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
00:32:42,890 ERROR [STDERR] 	at java.lang.Thread.run(Thread.java:595)
00:32:42,890 ERROR [STDERR] Caused by: javax.management.InstanceNotFoundException: trail:service=calculator is not registered.
00:32:42,890 ERROR [STDERR] 	at org.jboss.mx.server.registry.BasicMBeanRegistry.get(BasicMBeanRegistry.java:523)
00:32:42,890 ERROR [STDERR] 	at org.jboss.mx.server.MBeanServerImpl.getMBeanInfo(MBeanServerImpl.java:666)
00:32:42,890 ERROR [STDERR] 	at org.jboss.mx.util.MBeanProxyExt.init(MBeanProxyExt.java:407)
00:32:42,890 ERROR [STDERR] 	... 29 more
00:32:42,921 ERROR [STDERR] java.lang.NumberFormatException: null
00:32:42,921 ERROR [STDERR] 	at java.lang.Integer.parseInt(Integer.java:415)
00:32:42,921 ERROR [STDERR] 	at java.lang.Integer.parseInt(Integer.java:497)
00:32:42,921 ERROR [STDERR] 	at org.apache.jsp.calculator_jsp._jspService(calculator_jsp.java:78)
00:32:42,921 ERROR [STDERR] 	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
00:32:42,921 ERROR [STDERR] 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
00:32:43,406 ERROR [STDERR] 	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
00:32:43,406 ERROR [STDERR] 	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
00:32:43,406 ERROR [STDERR] 	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
00:32:43,406 ERROR [STDERR] 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
00:32:43,406 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
00:32:43,406 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
00:32:43,406 ERROR [STDERR] 	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
00:32:43,406 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
00:32:43,406 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
00:32:43,406 ERROR [STDERR] 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
00:32:43,406 ERROR [STDERR] 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
00:32:43,406 ERROR [STDERR] 	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
00:32:43,406 ERROR [STDERR] 	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
00:32:43,406 ERROR [STDERR] 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
00:32:43,406 ERROR [STDERR] 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
00:32:43,406 ERROR [STDERR] 	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
00:32:43,406 ERROR [STDERR] 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
00:32:43,906 ERROR [STDERR] 	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
00:32:43,906 ERROR [STDERR] 	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
00:32:43,906 ERROR [STDERR] 	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
00:32:43,906 ERROR [STDERR] 	at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
00:32:43,906 ERROR [STDERR] 	at java.lang.Thread.run(Thread.java:595)
00:32:43,906 ERROR [[jsp]] Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException
        at org.apache.jsp.calculator_jsp._jspService(calculator_jsp.java:104)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)

Thanx in advance


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